Turbine



Mmhm, 1929. c. w. DARE TURBINE Ofiginal Filed June 5, 1924 5Sheets-Sheet l INVENTOR c. w'. DAKE TURBINE March 19, 1929.

Original Filed June 5, 1924 3 Sheets-Sheet 2 W ATTORNEY March 19, 1929.c; w, DAKE 1,705,720

ruRBINE Original Filed June 5, 1924 s Sheets-Sheet 3 INVENTOR PatentedMar. 19, 1929.

UNITEDISTA-TES v 1.,70.'s,7: ;0 PATENT oFFrcE.

CHARLES w. BAKE, or cnIcAso, ILLINOIS. nssrenoa ro TIIn rYLE-imrioimncom- PANY, or cirIcAeo, ILLINOIS; A CORPORATION or NEW JERSEYKJ.

TURBINE.

Original application filed June 5 1924',

My invention relates to improvements in turbines, primarily intended foruse in connection withsteam or other elastic fluid. It has for oneobject to provide anew and improved type of self-governing turbine.Another objectis to provide a turbine whereby the speed of the turbineis positively checked by an automatic arrangement when the speedexceedsa predetern'iined point, thus not only limiting excess speeds butpositively tending to reduce the speeds back tothe norn'ialwhen thenormal has been exceeded. Anotherob ject is to provide a turbine wheelwhich itself servesas a governor and wherein" unbalanced weights on thewheel actually bend the wheel web to give the governing action. Otherobjects will appear from time to time through-- out the specificationand claims.

My invention is illustrated more or less diagrammatically in theaccompanying drawings, wherein 3 Figure 1 is a side elevation in partsection along an axial line; u Figure 2 is a front elevation in partsection along'the li-ne't22 of F igurel;

Figure is a detail-section of thewheel showing the partsinfull lines. I

Like parts are indicated by throughout, the specification and drawings.

A is a generally cylindricalturbine housing having feet A by which thehousingmaybe attached to any suitable support. .A is a packing glandcentrally disposed in the slightly coned webof the housing. A fis acoverclosing the housing, A a drain pipefor dis-. ch arging condensation fromthe housing, A is' the steam or motive fluid'supply pipe and A- is theexhaustpipe. The cover is held in position on the housing by -means ofthe holding bolts A. c

B is the turbine'shaft, it is preferably supportedin bearings nothereshown so as to be substantially concentric with the packing sleeve AB is the turbine hub mounted on the shaft B and held in place'thereon bythe nut B B B are packing rings carried in slots B in the outer face ofthe hub B engaging the inner wall of the packing sleeve A which sleeveis chamfered at 13 to permit the insertion of the hub from the left asshown in Figure 1. The hub B is flanged as at B and carries a wheel webB made up of a se ries of separate segments 13 preferably stamped orotherwise made from thin spring Serial to. 717,917. Diviqeaanathis 192s.swarm. 84,829.

like characters app1icati6n-fi1ed January 30,

steel These segments may be separate. at their inner or. outerperpheries or'may be joined together or may be separated interme- V diatetheir peripheries. .At their inner periphery they engage the flange 13being held thereagainst by. the ring B threaded on the hub B and clampedthereby rigidly in' posi tiori. At their outer peripheries they arebolted to an inwardly extending flange B onthe turbine wheel rim-B Someor all of these segments 13 have projecting from one side rigidlymounted wei, ;htsB which overhang beyond the point of support ofthe'inner periphery of the wheel. I

The wheel rim has on its outer periphery, two parallel series of"buckets, the buckets C being normally driving buckets, the buckets Cbeing reverse buckets adapted to work in the opposite direction. Thesebuckets areall of them inclined to the face of the wheel and to a radiusof the wheel and have curved bottoms whereby the'steani flowing into thebucket at;

one side of the wheel comes' out'of the other side in theoppositedirection having reversed C is anozzle block supplied with steanifromthepipe A? its flow in the usual manner.

through the passage'G This passage Odischarges into. a tangentialpassage 0 from which lead exhausts C C discharging the steam against thebuckets C. C is: a return passage block containing return passages G Cadapted to receive the steam from the buckets C and return it again tothose buckets so that the steamin its passage from the nozzle throughthe working buckets and I return passages'makes a number ofcompleterevolu tions on as iral oath raduall "1vin u its 1 2:; g

power to the buckets. I

This'will continue as long as the parts are in the positionshown inFigure 1. The steam rushing men one side of thebucket andflow'-" ing outon the other side through the return passage and so on. If, however, thebucket wheel bemoved laterally into the position shown in Figure 3,-someof the steam'instead of being discharged from the bucket into the returnpassage will be discharged into the reversing-passage D which is formedinthe return passage block 0*. This steam will have its directionreversed in that passage and will be discharged against the reversebuckets C being thence discharged into the exhaust chamber D in thehousing. Thus this steam tending to work against the normal drivingchange the steam flow and ultimately to exert a braking action. Atnormal speeds the spring segments making up the central web of the wheelhold the Wheel in line with the nozzle and forward buckets. As the speedexceeds av predetern'iined rate, the unbalance of these weights tends tobend the web "from p the position shown in Figure 1 toward the positionshown in Figure 3. This bending of the web or of the segments making itup moves the wheel laterally and accon'iplishes the desired regulatingresult. As soon as the speed drops down the spring of thewheel tends toresist the tilting action of the weights and returns the wheel andbuckets to the normal running position.

The filler ring E is set into an annular rib E on the inner face of thecover A to limit the-lateral movement of the wheel and provide arenewable friction surlace wl'iich may be engaged by the edge of thewheel if the action of the weights becomes suflicient to throw the wheelthat'far. Under normal conditions, this friction ring will seldom comeinto action but it has a double function, namely, to limit the lateralmovement of the wheel and to add a friction load calculated to retardthe wheel and bring it back to a normal rotational speed.

I have shown my device applied to the governing of a. steam turbine. Itwill be understood that the lateral extending unbalanced Weights mountedon a flexible wheel member may be used for many various purposes whereit is deslred to laterally displace a moving art alon its axis in resionse to chan esin C b ments may be so narrow as to be described asspokes or may be so mounted as to permit one spring disc to make uptheentire wheel with out departing in any way from my invention. Thisapplication is a division oi my CO? pending application, Serial Number717,917 filed June 5, 1924.

I claim: 1. A rotor comprising a hub, a rim and a flexible memberjoining them to form a wheel,

weights rigidly mounted on and projecting laterally from such member andadapted to bend it under the influence of centrifugal force to laterallydisplace the rim.

2. A rotor comprising a hub, a rim and a flexible plate joining them toform a wheel, weights rigidly mounted on and projecting laterally fromsuch plate and adapted to bend it under the influence ofcentrifugalforce to laterally displace the rim.

3. A rotor comprising a hub, a rim and a plurality of flexible segmentsjoining them to form a wheel, weights rigidly mounted on and projectinglaterally from such segments and adapted to bend them under theinfluence of centrifugal force to laterally displace the rim.

4. A rotor comprising ahub, a rim and a plurality of flexible spokesjoining them to form a wheel, weights rigidly mounted on andprojectinglaterally from such spokes and adapted to bend them under theinfluence of centrifugal force to laterally displace the rim. i

5. A rotor comprising a hub, a rim and-a plurality of flexible membersjoining them to form a wheel, a weight rigidly mounted on and projectingfrom one of said members and adapted to bend it.

6. Arotor comprising a hub, a rim and a plurality of flexible membersjoining them to 7 form a wheel, weights rigidly mounted on andprojecting from some of said. members and. adapted to bend it.

7. A rotor comprising a hub, a-rim. and a plurality of flexible membersjoining them to form a wheel, a weight rigidly mounted on and projectingfrom one of said members and adapted to bend it, said weight comprisingslotted block riveted to one face of the men1- her and projecting atright angles therefrom in a direction generally parallel with the axisof rotation. v i

8. A rotor comprising a hub, a rim and a plurality of flexible membersjoining them to form a wheel, weights rigidly mounted on and projectingfrom some of said members and adapted to bend it, said weightscomprising slotted blocks riveted. to'one face of the members andprojecting at right angles therefrom in a direction generally parallelwith the axis of rotation.

Signed at Chicago county of Cook'and State of Illinois, this 26th day ofJanuary,

1926. i CHARLES W. DAKE.

